JVC CA-MXGT700, Руководство по обслуживанию

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MX-GT700
1-36
HA12235 (JIC1) : Audio signal processor
1. Block diagram
2.2u
8.2k
(6.8k+1.5k)
2.2k
REC OUT(L)
NC
ALC(L)
TEST (Open for normal use)
+
I
ref
ALC ON/OFF High/Normal A (REC RETURN ON/OFF)
Vcc
ALC
DET
MUTE ON/OFF REC MUTE OFF/ON
GND
10u
1M
22k
Vcc
A/
B
MUTE
+
+
120/60 (Norm/High)
4.7
k
4.7
k
2
.2u
10k
0.1u
15k
2.2k
2.2u
8.2k
(6.8k+1.5k)
+
2
REC OUT(R)
NC
NC
0.1u
TAI(R)
EQOUT(R)
PB-EQ(R)
ALC(R)
REC IN(R)
1
4
5
6
8
9
10
AB
7
3
2
Return SW
0.01
u
+
EQ
ALC
PB OUT(R)
PB-NF2(R)
34
35 36 37 38
39 40
GND
REC Return
+
B
IN(L)
AIN(R)
IN(R)
PB-NF1(R)
Return SW
NC
47
u
B
30
31
32 33
+
RIP
AB
+
28
120/60 (Norm/High)
AIN(L)
PB-NF1(L)
29
1u
47
u
4.7
k
4.7
0.01
u
+
k TAI(L)
EQOUT(L)
PB-NF2(L)
PB-EQ(L)
21
22
23
24
25
26
27
MUTE
0.1u
15k
2.2u
10k
EQ
NC
PB OUT(L)
0.1u
REC IN(L)
11 12 13
14
15
16
17 18 19
20
2. Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
PB-NF2(R)
PB-EQ(R)
EQOUT(R)
TAI(R)
PBOUT(R)
NC
RECIN(R)
NC
RECOUT(R)
ALC ON/OFF
High/Norm
A/B
MUTE ON/OFF
Function
PB EQ feed back
NAB output
EQ output
Tape input
PB output
NC pin
REC-EQ input
NC pin
REC output
Mode control input
Mode control input
Mode control input
Mode control input
Pin No.
15
16
17
18
19
20
21
22
23
24
25
26
Symbol
REC MUTE
OFF/ON
Vcc
GND
IREF
Test mode
RECOUT(L)
NC
RECIN(L)
NC
PBOUT(L)
Function
Mode control input
Vcc pin
GND pin
Equalizer reference
current input
Test mode pin
REC output
NC pin
REC-EQ input
NC pin
PB output
Pin No.
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Symbol
TAI(L)
EQOUT(L)
PB-EQ(L)
PB-NF2(L)
PB-NF(L)
AIN(L)
RIP
BIN(L)
REC-RETURN
GND
BIN(R)
NC
AIN(R)
PB-NF1(R)
Function
Tape input
EQ output
NAB output
PB EQ feed back
PB EQ feed back
PB A deck input
Ripple filter
PB B deck input
REC Return
GND pin
PB B deck input
NC pin
PB A deck input
PB EQ feed back